Get ready to feel old: MTV’s The Hills premiered exactly 10 years ago today. We know. With six seasons airing between 2006 and 2010, the show is like a time capsule to going-out tops, boot-cut jeans, and huge sunglasses. And let’s not forget about the barrel curls and spray tans—the show was 90 percent close-ups, remember, so the girls' hair and makeup choices got plenty of airtime. Here are a few such beauty moments we’ll never forget. We might be 10 years older, but at least we're wiser when it comes to using hot tools.